Publication
Title
Phonon band structure of Si nanowires: a stability analysis
Author
Abstract
We present full ab initio calculations of the phonon band structure of thin Si nanowires oriented along the [110] direction. Using these phonon dispersion relations, we investigate the structural stability of these wires. We found that all studied wires were stable also when doped with either B or P, if the unit cell was taken sufficiently large along the wire axis. The evolution of the phonon dispersion relations and of the sound velocities with respect to the wire diameters is discussed. Softening is observed for acoustic modes and hardening for optical phonon modes with increasing wire diameters.
Language
English
Source (journal)
Nano letters / American Chemical Society. - Washington
Publication
Washington : 2009
ISSN
1530-6984
Volume/pages
9:1(2009), p. 107-111
ISI
000262519100020
Full text (Publisher's DOI)
UAntwerpen
Faculty/Department
Research group
[E?say:metaLocaldata.cgzprojectinf]
Publication type
Subject
Affiliation
Publications with a UAntwerp address
External links
Web of Science
Record
Identification
Creation 07.05.2009
Last edited 10.10.2017
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